error: lifetime may not live long enough
  --> $DIR/error-handling.rs:20:16
   |
LL | fn foo<'a, 'b, 'c>(x: &'static i32, mut y: &'a i32) -> E<'b, 'c> {
   |        --  -- lifetime `'b` defined here
   |        |
   |        lifetime `'a` defined here
...
LL |         let _: &'b i32 = *u.0;
   |                ^^^^^^^ type annotation requires that `'a` must outlive `'b`
   |
   = help: consider adding the following bound: `'a: 'b`

error: aborting due to previous error